SOCOM: Confrontation didn't launch with Trophies; instead, it shipped with a lot of bugs. Slant Six even admits that "the launch was pretty rough on all of us." However, with patch 1.20 already out fixing a majority of the problem issues and a 1.30 patch coming soon, things are turning around.
In fact, the much coveted Trophy support is said to arrive in the upcoming 1.30 patch, among other new features. You can find a list of all the new features and bug fixes for the new update after the break. The crew notes, however, "that some items listed may be delayed to a following update if additional development is required beyond what our schedule for the 1.30 update allows." That means, don't take it as a 100 percent guarantee.
[Thanks Ryan and DeforMAKulizer!]